杂交小麦苗期光合特性分析及其对强优势组合的早期预测

李姜玲,杨澜,阮仁武,李中安

Analysis of Photosynthetic Characteristics of Hybrid Wheat at Seedling Stage and Its Use for Early Prediction of Strong Heterosis Combinations

LI JiangLing,YANG Lan,RUAN RenWu,LI ZhongAn

表1 杂交小麦及其亲本的光合性状比较

Table 1 Comparison of photosynthetic characters in hybrid wheat and its parents

亲本及F1代 Parents and F1 hybrid 净光合速率 Pn (μmol·m-2·s-1) 气孔导度 Gs (mmol·m-2·s-1) 胞间二氧 化碳浓度 Ci (μmol·mol-1) 水分利用 效率 WUE (mmol·mol-1) 蒸腾速率 Tr (mmol·m-2·s-1) 叶绿素a Chl.a (mg·g-1) 叶绿素b Chl.b (mg·g-1) 叶绿素(a+b) Chl.(a+b) (mg·g-1) 不育系 Male sterile lines 18L7077 28.28 373.78 255.09 13.45 2.10 0.842 0.253 1.095 15L7084 25.58 340.2 228.01 17.35 1.56 0.848 0.262 1.109 12L8012 23.72 315.66 271.39 12.11 1.97 0.782 0.245 1.027 12L8015 22.38 269.2 237.99 14.73 1.54 0.798 0.245 1.043 恢复系 Restorer lines 川麦93 Chuanmai93 24.94 365.86 231.84 15.7 1.64 0.850 0.259 1.108 川14品16 Chuan14pin16 23.53 318.98 233.02 15.32 1.55 0.896 0.269 1.164 F1代 F1 hybrid 12L8015×川14品16 12L8015×Chuan 14 pin 16 27.92 434.69 256.59 16.92 1.67 0.851 0.244 1.095 15L7084×川14品16 15L7084×Chuan 14 pin 16 27.83 439.33 239.79 16.58 1.75 0.826 0.245 1.071 18L7077×川14品16 18L7077×Chuan 14 pin 16 30.26 454.31 235.03 13.94 2.17 0.809 0.243 1.052 12L8012×川麦93 12L8012×Chuanmai 93 30.03 454.59 246.35 14.08 2.20 0.808 0.247 1.055 12L8015×川麦93 12L8015×Chuanmai 93 31.48 461.67 220.00 17.75 1.89 0.778 0.236 1.014 15L7084×川麦93 15L7084×Chuanmai 93 28.25 396.67 230.21 14.61 1.96 0.859 0.267 1.126 均值 Mean 27.02 385.41 240.44 15.21 1.83 0.829 0.251 1.080 标准差 Std 2.814 62.018 13.874 1.640 0.236 0.033 0.010 0.042 变异系数CV (%) 10.42 16.09 5.77 10.78 12.88 4.04 4.03 3.90 组间差异Difference in combinations (F) 111.460** 438.683** 8.840** 105.507** 59.222** 23.849** 11.24* 12.46**